voucher/internal/data/mixrepoimpl/cmb.go

67 lines
1.4 KiB
Go

package mixrepoimpl
import (
"context"
"fmt"
"strings"
"time"
v1 "voucher/api/v1"
"voucher/internal/biz/mixrepos"
"voucher/internal/conf"
"voucher/internal/pkg/cmb"
"voucher/internal/pkg/helper"
)
type CmbMixRepoImpl struct {
bc *conf.Bootstrap
}
func NewCmbMixRepoImpl(bc *conf.Bootstrap) mixrepos.CmbMixRepo {
return &CmbMixRepoImpl{bc: bc}
}
func (s *CmbMixRepoImpl) BuildRequest(_ context.Context, bizJsonStr string) (*v1.CmbRequest, error) {
// 我们的sm2 公钥加密
// 请求到我们这边 使用 我们的私钥解密
encryptBody, err := cmb.Encrypt(s.bc.Cmb.Sm2Puk, bizJsonStr)
if err != nil {
return nil, err
}
date := time.Now().Format("20060102150405")
reply := &v1.CmbRequest{
Mid: s.bc.Cmb.Mid,
Aid: s.bc.Cmb.Aid,
Date: date,
Random: string(cmb.RandomBytes(16)),
KeyAlias: s.bc.Cmb.KeyAlias,
CmbKeyAlias: s.bc.Cmb.CmbKeyAlias,
EncryptBody: encryptBody,
Sign: "",
}
kvRows := helper.SortStructFieldsByKey(reply)
var strToBeSigned strings.Builder
for _, kv := range kvRows {
if kv.Key == "sign" {
continue
}
if kv.Value == "" {
continue
}
strToBeSigned.WriteString(fmt.Sprintf("%s=%s&", kv.Key, kv.Value))
}
str := fmt.Sprintf("/voucher/cmb/v1/order?%s", strings.TrimRight(strToBeSigned.String(), "&"))
sing, err := cmb.Sign(s.bc.Cmb.CmbSm2Pik, str)
if err != nil {
return nil, err
}
reply.Sign = sing
return reply, nil
}